Formation of ethylenediamine-cellulose complexes by vapor-phase treatment

Lokhande, H. T.; Thakare, Ashlesha; Patil, N. B.; Chidambareswaran, P. K.; Warrier, J. K. S.

doi:10.1002/pol.1990.140280104

Cited by 1 publication

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“…Cellulose III can be obtained by treating cellulose I or cellulose II with liquid ammonia or various amines (Lokhande et al 1977;Wada et al 2001). Ethylenediamine (EDA) has been found to change the cellulose I lattice structure to cellulose II or III in previous studies (Lokhande and Thakare 1990;Wada et al 2008). Lokhande et al (1976) reported the partial conversion of cellulose I to cellulose II when cotton fibers were swollen and decrystallized by treatment with a 75 wt% aqueous EDA solution, followed by the removal of the reagent via washing with water.…”

Section: Introductionmentioning

confidence: 99%

Effect of ethylenediamine treatment on cellulose nanofibers and the formation of high-strength hydrogels

Wang

et al. 2018

BioRes

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The effect of ethylenediamine (EDA) treatment on cellulose nanofibers (CNFs) remains unclear. To study the effect of EDA treatment on the gelation of the fibrillated CNFs, hydrogels that received 1, 2, and 3 EDA-treatment/washing cycles were prepared and analyzed. Different concentrations of the EDA treatment were also used to prepare hydrogels. Both X-ray diffraction and Fourier transform infrared studies showed that cellulose I/II hybrid hydrogels were fabricated from CNFs via 2 or 3 cycles of 99 wt% EDA treatment and then were washed with water. Field emission scanning electron microscopy observations indicated that the obtained CNF-based hydrogels presented some aggregations via the coalescence of adjacent individual CNFs. Moreover, the hydrogel film with a cellulose I/II crystal structure showed a higher tensile strength of 2.4 MPa and a fracture strain of 23.5%. This was because it had an entangled continuous nanonetwork structure formed after repeated EDA treatment. The authors hope that this work can further stimulate interest in the development of CNF-based hydrogels with multiple structures, properties, and functions for a variety of applications.

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Section: Introductionmentioning

confidence: 99%

Effect of ethylenediamine treatment on cellulose nanofibers and the formation of high-strength hydrogels

Wang

et al. 2018

BioRes

View full text Add to dashboard Cite

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Formation of ethylenediamine-cellulose complexes by vapor-phase treatment

Cited by 1 publication

References 7 publications

Effect of ethylenediamine treatment on cellulose nanofibers and the formation of high-strength hydrogels

Effect of ethylenediamine treatment on cellulose nanofibers and the formation of high-strength hydrogels

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